Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A display device comprising: a plurality of pixels arranged in a first direction and a second direction; a contact responding section configured to produce an electric change in response to an object to be detected coming into contact with or proximity to a detecting surface, the contact responding section including a plurality of driving electrodes extending in the first direction; a driving scanning section configured to scan application of a driving voltage to individual ones of the plurality of driving electrodes in the second direction or a direction opposite to the second direction; a plurality of detecting lines extending in the second direction such that each of the plurality of detecting lines intersects the driving electrodes; and a detecting section configured to detect occurrence of the electric change from a voltage change in at least one of the plurality of detecting lines to identify a position of the occurrence, wherein the driving electrodes include at least one first drive electrode and at least one second drive electrode, a first voltage is applied to the at least one first drive electrode, a second voltage, which is different from the first voltage, is applied to the at least one second drive electrode that is other than the at least one first drive electrode, and the detecting section identifies the position in which the object to be detected is in contact or in proximity on a basis of a pattern of the voltage change of the detecting lines, the pattern of the voltage change occurring according to a difference in the manner of the intersecting between the detecting lines and the driving electrodes.
A display device includes a pixel array arranged in a first and second direction, a contact detection system, and a position identification mechanism. The contact detection system comprises a plurality of driving electrodes extending in the first direction and a contact responding section that generates an electrical change when an object touches or approaches a detecting surface. A driving scanning section sequentially applies a driving voltage to the driving electrodes in the second direction or its opposite. Multiple detecting lines extend in the second direction, intersecting the driving electrodes. A detecting section monitors voltage changes in these detecting lines to determine the position of the object based on the pattern of voltage variations. The driving electrodes include at least one first drive electrode and at least one second drive electrode, where the first drive electrode receives a first voltage and the second drive electrode receives a different second voltage. The detecting section identifies the object's position by analyzing the voltage change pattern in the detecting lines, which arises from the intersection differences between the detecting lines and the driving electrodes. This design enables precise touch or proximity detection by leveraging distinct voltage patterns generated by the varying electrode configurations.
2. The display device according to claim 1 , wherein the plurality of detecting lines include a first and second sets of detecting lines extending in the second direction and being in a form of parallel stripes; and the detecting section connected to the first and second sets of detecting lines, respectively, a first detecting section and a second detecting section each detecting occurrence of the electric change on a basis of a voltage change pattern occurring in the detecting lines of a corresponding set and identifying a position of the occurrence.
A display device includes a touch detection system that detects touch inputs by monitoring electrical changes in detecting lines. The detecting lines are arranged in parallel stripes extending in a second direction, forming first and second sets. Each set is connected to a dedicated detecting section. The first detecting section monitors the first set of detecting lines for voltage changes, identifies when an electrical change occurs, and determines the position of the occurrence based on the voltage change pattern. Similarly, the second detecting section performs the same functions for the second set of detecting lines. This dual-set configuration allows for precise touch detection by analyzing voltage variations in both sets independently, improving accuracy and responsiveness. The system enables the display device to detect and locate touch events by correlating electrical changes in the detecting lines with specific positions on the display surface. The parallel stripe arrangement of the detecting lines ensures uniform coverage and reliable detection across the entire display area. This design enhances touch sensitivity and reduces false positives by distinguishing between intentional touch inputs and unintended electrical disturbances. The detecting sections process the voltage change patterns to accurately pinpoint the location of touch interactions, supporting multi-touch capabilities and improved user interaction.
3. The display device according to claim 1 , wherein the contact responding section is formed by arranging sensors in a plane parallel to the detecting surface in a form of a matrix, and the driving scanning section performs scanning with a line of the matrix in the first direction as a minimum unit.
A display device includes a touch-sensitive surface for detecting contact inputs. The device has a contact responding section formed by arranging sensors in a plane parallel to the detecting surface in a matrix configuration. A driving scanning section performs scanning operations, where the minimum scanning unit is a line of the matrix in a first direction. This arrangement allows for precise detection of contact positions by sequentially scanning each line of the matrix. The sensors are distributed in a grid pattern, enabling the device to identify contact points with high accuracy. The scanning process involves sequentially activating and reading signals from each sensor line, ensuring efficient and reliable touch detection. This configuration is particularly useful in touch-sensitive displays where accurate and responsive input detection is required. The matrix arrangement of sensors provides a structured and systematic approach to scanning, improving the overall performance of the touch detection system. The device is designed to enhance user interaction by providing a seamless and responsive touch interface.
4. The display device according to claim 1 , wherein the contact responding section is formed by arranging sensors in a plane parallel to the detecting surface in a form of a matrix, and the driving scanning section performs scanning with a predetermined number of consecutive lines of the matrix in the first direction as a minimum unit.
A display device includes a touch-sensitive surface for detecting user input. The device addresses the challenge of accurately detecting touch interactions while minimizing processing complexity and power consumption. The touch-sensitive surface incorporates a contact responding section composed of sensors arranged in a matrix pattern parallel to the detecting surface. These sensors are organized in rows and columns, forming a grid structure. A driving scanning section performs scanning operations across the matrix, using a predetermined number of consecutive lines in a first direction (e.g., rows) as the smallest operational unit. This approach reduces the computational load by limiting the scanning area to a subset of lines rather than processing the entire matrix at once. The scanning process may involve sequentially activating or reading signals from these lines to detect touch events. The device may also include additional features, such as a display panel integrated with the touch-sensitive surface, where the sensors are embedded within or adjacent to the display elements. The matrix arrangement and selective scanning improve responsiveness and efficiency, making the device suitable for applications requiring precise touch detection with minimal latency.
5. The display device according to claim 1 , wherein the contact responding section is formed by arranging sensors in a plane parallel to the display surface in a form of a matrix, and the driving scanning section performs scanning with a predetermined number of consecutive lines of the matrix in the first direction as a minimum unit.
A display device with an integrated touch-sensitive interface includes a contact responding section formed by sensors arranged in a matrix pattern parallel to the display surface. The sensors detect touch inputs by scanning the matrix in a first direction, using a predetermined number of consecutive lines as the smallest scanning unit. This design allows for efficient touch detection while maintaining display functionality. The driving scanning section controls the scanning process, ensuring accurate and responsive touch input detection across the display area. The matrix arrangement of sensors enables precise localization of touch points, while the scanning method optimizes performance by reducing the number of lines processed at once. This configuration is particularly useful in touchscreen displays where both visual output and input detection are required simultaneously. The invention addresses the need for reliable and efficient touch input mechanisms in display devices, improving user interaction without compromising display quality. The scanning method ensures that touch inputs are detected quickly and accurately, even in high-resolution displays. The matrix sensor arrangement provides uniform sensitivity across the entire display surface, enhancing the overall user experience.
6. A display device comprising: a plurality of pixels arranged in a first direction and a second direction; a touch panel including a first area and a second area that is adjacent to the first area in the second direction; a plurality of first detecting lines arranged in the first area; a plurality of second detecting lines arranged in the second area; a plurality of driving lines arranged to intersect the first detecting lines in the first area and the second detecting lines in the second area, wherein an area boundary between the first area and the second area is along the driving lines in a plan view; a scan driving circuit configured to supply a scan driving signal to the driving lines, the scan driving signal being a signal that is also used for display driving of a display of the touch detecting device in generating image information for the display; and a detecting section to detect a touch, based on a signal detected from one or both of the first detecting lines and the second detecting lines, wherein the scan driving circuit, upon starting the display driving that includes writing for the display in the first area, performs a plurality of contact driving scans of the first and second areas in parallel by simultaneously supplying the scan driving signal that is an alternating voltage pulse signal having a predetermined frequency to the corresponding driving lines in the first area and the second area in parallel, without performing any display driving for the display in the second area.
This invention relates to a display device with integrated touch detection capabilities, addressing the challenge of efficiently performing touch sensing while maintaining display functionality. The device includes a pixel array arranged in two perpendicular directions, a touch panel divided into adjacent first and second areas, and multiple detecting lines in each area. Driving lines intersect the detecting lines in both areas, with the boundary between the first and second areas aligned with the driving lines. A scan driving circuit supplies a scan driving signal to the driving lines, which is also used for display driving to generate image information. A detecting section processes signals from the detecting lines to detect touch inputs. When display driving begins in the first area, the scan driving circuit performs multiple contact driving scans in both areas simultaneously by supplying an alternating voltage pulse signal to the corresponding driving lines in parallel. This is done without performing any display driving in the second area, allowing for efficient touch detection while maintaining display functionality in the active area. The invention optimizes touch sensing performance by leveraging shared driving signals and parallel scanning, reducing latency and power consumption.
Unknown
November 24, 2020
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